wxPython/demo/MimeTypesManager.py

   1 #----------------------------------------------------------------------
   2 # Name:        wxMimeTypesManager
   3 # Purpose:     Demonstrate use of wx.MimeTypesManager, wx.FileType
   4 #
   5 # Author:      Jeff Grimmett (grimmtoo@softhome.net), adapted from original
   6 #              .wdr-derived demo
   7 #
   8 # Created:     12/31/03
   9 # RCS-ID:      $Id$
  10 # Copyright:
  11 # Licence:     wxWindows license
  12 #----------------------------------------------------------------------
  13 #
  14
  15
  16 import  pprint
  17 import  wx
  18 import  images
  19
  20 #----------------------------------------------------------------------------
  21
  22 class MimeTypesDemoPanel(wx.Panel):
  23     def __init__(self, parent, log):
  24
  25         self.log = log
  26
  27         wx.Panel.__init__(self, parent, -1)
  28
  29         # This will be used for all of the labels that follow (bold label)
  30         bfont = wx.Font(
  31                     self.GetFont().GetPointSize(),
  32                     self.GetFont().GetFamily(),
  33                     self.GetFont().GetStyle(),
  34                     wx.BOLD
  35                     )
  36
  37         # Contains everything
  38         tsizer = wx.BoxSizer(wx.VERTICAL)
  39
  40         # Contains upper controls
  41         usizer = wx.BoxSizer(wx.HORIZONTAL)
  42
  43         # Text control for ext / type entry plus label.
  44         t = wx.StaticText(self, -1, 'Extension / MIME type: ', style = wx.ALIGN_RIGHT )
  45         t.SetFont(bfont)
  46         usizer.Add(t, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 2)
  47
  48         self.ext = wx.TextCtrl(self, -1, value="wav", style = wx.TE_PROCESS_ENTER )
  49         usizer.Add(self.ext, 0, wx.ALL | wx.ALIGN_TOP, 4)
  50         self.Bind(wx.EVT_TEXT_ENTER, self.OnLookup, self.ext)
  51
  52         # Select how to look it up
  53         self.useExt = wx.RadioButton(self, -1, "By extension", style = wx.RB_GROUP)
  54         self.useMime = wx.RadioButton(self, -1, "By MIME type")
  55
  56         usizer.Add(self.useExt, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  57         usizer.Add(self.useMime, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  58         self.useExt.SetValue(1)
  59
  60         # Trigger a lookup (hitting ENTER in the text ctrl will do the same thing)
  61         self.go = wx.Button(self, -1, "Go get it!")
  62         usizer.Add(self.go, 0, wx.ALL | wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL, 4)
  63         self.Bind(wx.EVT_BUTTON, self.OnLookup, self.go)
  64
  65         # StaticBox with larger label than usual
  66         lbox = wx.StaticBox(self, -1, 'wx.FileType')
  67         lbox.SetFont(
  68             wx.Font(
  69                 self.GetFont().GetPointSize() * 2,
  70                 self.GetFont().GetFamily(),
  71                 self.GetFont().GetStyle(),
  72                 wx.BOLD
  73                 ))
  74
  75         lsizer = wx.StaticBoxSizer(lbox, wx.HORIZONTAL)
  76
  77         # Contains the wx.FileType info
  78         llsizer = wx.GridBagSizer(2, 2)
  79         llsizer.AddGrowableCol(2)
  80
  81         #------- Icon info
  82
  83         t = wx.StaticText(self, -1, 'GetIconInfo: ', style = wx.ALIGN_RIGHT )
  84         t.SetFont(bfont)
  85         llsizer.Add(t, (0, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  86
  87         self.icon = wx.StaticBitmap(self, -1, images.getNoIconBitmap())
  88         llsizer.Add(self.icon, (0, 1), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  89
  90         self.iconsource = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
  91         llsizer.Add(self.iconsource, (0, 2), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  92
  93         self.iconoffset = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
  94         llsizer.Add(self.iconoffset, (0, 3), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
  95
  96         #------- MIME Type
  97
  98         t = wx.StaticText(self, -1, 'GetMimeType: ', style = wx.ALIGN_RIGHT )
  99         t.SetFont(bfont)
 100         llsizer.Add(t, (1, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 101
 102         self.mimetype = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 103         llsizer.Add(self.mimetype, (1, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 104
 105         #------- MIME Types
 106
 107         t = wx.StaticText(self, -1, 'GetMimeTypes: ', style = wx.ALIGN_RIGHT )
 108         t.SetFont(bfont)
 109         llsizer.Add(t, (2, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 110
 111         self.mimetypes = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 112         llsizer.Add(self.mimetypes, (2, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 113
 114         #------- Extensions
 115
 116         t = wx.StaticText(self, -1, 'GetExtensions: ', style = wx.ALIGN_RIGHT )
 117         t.SetFont(bfont)
 118         llsizer.Add(t, (3, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 119
 120         self.extensions = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 121         llsizer.Add(self.extensions, (3, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 122
 123         #------- Description
 124
 125         t = wx.StaticText(self, -1, 'GetDescription: ', style = wx.ALIGN_RIGHT )
 126         t.SetFont(bfont)
 127         llsizer.Add(t, (4, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 128
 129         self.description = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY)
 130         llsizer.Add(self.description, (4, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 131
 132         #------- Open command
 133
 134         t = wx.StaticText(self, -1, 'GetOpenCommand: ', style = wx.ALIGN_RIGHT )
 135         t.SetFont(bfont)
 136         llsizer.Add(t, (5, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 137
 138         self.opencommand = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 139         llsizer.Add(self.opencommand, (5, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 140
 141         #------- Print command
 142
 143         t = wx.StaticText(self, -1, 'GetPrintCommand: ', style = wx.ALIGN_RIGHT )
 144         t.SetFont(bfont)
 145         llsizer.Add(t, (6, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 146
 147         self.printcommand = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY )
 148         llsizer.Add(self.printcommand, (6, 1), (1, 3), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 149
 150         #------- All commands
 151
 152         t = wx.StaticText(self, -1, 'GetAllCommands: ', style = wx.ALIGN_RIGHT )
 153         t.SetFont(bfont)
 154         llsizer.Add(t, (7, 0), (1, 1), wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 2)
 155
 156         self.allcommands = wx.TextCtrl(self, -1, value="", style = wx.TE_READONLY | wx.TE_DONTWRAP | wx.TE_MULTILINE )
 157
 158         # Set the default height to be smaller than normal (for
 159         # multi-line) so the sizer can then expand it to whatever
 160         # space is available
 161         self.allcommands.SetSize((-1, 20))
 162
 163         llsizer.Add(self.allcommands, (7, 1), (1, 3), wx.ALL | wx.GROW | wx.ALIGN_CENTER, 2)
 164
 165         # Tell the sizer to expand this row as needed
 166         llsizer.AddGrowableRow(7)
 167
 168         #----------------------------------------------------------------------------
 169
 170         lrsizer = wx.BoxSizer(wx.VERTICAL)
 171
 172         #------- List box with known MIME types
 173
 174         t = wx.StaticText(self, -1, 'Known MIME types')
 175         t.SetFont(bfont)
 176         lrsizer.Add(t, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 177
 178         self.mimelist = wx.ListBox(self, -1, choices=[], style = wx.LB_SINGLE | wx.LB_SORT)
 179         lrsizer.Add(self.mimelist, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 180         self.Bind(wx.EVT_LISTBOX, self.OnListbox, self.mimelist)
 181
 182         #----------------------------------------------------------------------------
 183
 184         lsizer.Add(llsizer, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 185         lsizer.Add(lrsizer, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 186
 187         #----------------------------------------------------------------------------
 188
 189         tsizer.Add(usizer, 0, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 190         tsizer.Add(lsizer, 1, wx.ALL | wx.EXPAND | wx.ALIGN_CENTER, 4)
 191
 192         #----------------------------------------------------------------------------
 193
 194         self.SetSizer(tsizer)
 195         tsizer.Fit(self)
 196
 197         # Populate the Known MIME types list with what is in the database
 198         mtypes = wx.TheMimeTypesManager.EnumAllFileTypes()
 199         for mt in mtypes:
 200             self.mimelist.Append(mt)
 201
 202         # Do a lookup of *.wav for a starting position
 203         self.OnLookup()
 204
 205     # Grab the selection from the listbox, push that into
 206     # the text box at top, select 'MIME', and then look it up.
 207     def OnListbox(self, event):
 208         mimetype = event.GetString()
 209         self.ext.SetValue(mimetype)
 210         self.useMime.SetValue(1)
 211         self.OnLookup()
 212
 213     # Look up a given file extension or MIME type.
 214     def OnLookup(self, event=None):
 215         txt = self.ext.GetValue()
 216
 217         # For MIME lookups
 218         if self.useMime.GetValue() == 1:
 219             fileType = wx.TheMimeTypesManager.GetFileTypeFromMimeType(txt)
 220             msg = "Mime type"
 221
 222             # Select the entered value in the list
 223             if fileType:
 224                 if self.mimelist.FindString(txt) != -1:
 225                     self.mimelist.SetSelection(self.mimelist.FindString(txt))
 226
 227         # Must be an extension lookup
 228         else:
 229             fileType = wx.TheMimeTypesManager.GetFileTypeFromExtension(txt)
 230             msg = "File extension"
 231
 232             # Select the entered value in the list
 233             if fileType:
 234                 if self.mimelist.FindString(str(fileType.GetMimeType())) != -1:
 235                     # Using CallAfter to ensure that GUI is ready before trying to
 236                     # select it (otherwise, it's selected but not visible)
 237                     wx.CallAfter(self.mimelist.SetSelection, self.mimelist.FindString(str(fileType.GetMimeType())))
 238
 239
 240         if fileType is None:
 241             wx.MessageBox(msg + " not found.", "Oops!")
 242         else:
 243             self.Update(fileType)
 244
 245     # Populate the wx.FileType fields with actual values.
 246     def Update(self, ft):
 247
 248         #------- Icon info
 249         info = ft.GetIconInfo()
 250
 251         if info is None:
 252             bmp = images.getNoIconBitmap()
 253             self.icon.SetBitmap(bmp)
 254             self.iconsource.SetValue("")
 255             self.iconoffset.SetValue("")
 256         else:
 257             icon, file, idx = info
 258             if icon.Ok():
 259                 self.icon.SetIcon(icon)
 260             else:
 261                 bmp = images.getNoIconBitmap()
 262                 self.icon.SetBitmap(bmp)
 263             self.iconsource.SetValue(file)
 264             self.iconoffset.SetValue(str(idx))
 265
 266         #------- MIME type
 267         self.mimetype.SetValue(str(ft.GetMimeType()))
 268         #------- MIME types
 269         self.mimetypes.SetValue(str(ft.GetMimeTypes()))
 270         #------- Associated extensions
 271         self.extensions.SetValue(str(ft.GetExtensions()))
 272         #------- Description of file type
 273         self.description.SetValue(str(ft.GetDescription()))
 274
 275         #------- Prep a fake command line command
 276         extList = ft.GetExtensions()
 277
 278         if extList:
 279             ext = extList[0]
 280             if ext[0] == ".": ext = ext[1:]
 281         else:
 282             ext = ""
 283
 284         filename = "SPAM" + "." + ext
 285         mime = ft.GetMimeType() or ""
 286
 287         #------- OPEN command
 288         cmd = ft.GetOpenCommand(filename, mime)
 289         self.opencommand.SetValue(str(cmd))
 290
 291         #------- PRINT command
 292         cmd = ft.GetPrintCommand(filename, mime)
 293         self.printcommand.SetValue(str(cmd))
 294
 295         #------- All commands
 296         all = ft.GetAllCommands(filename, mime)
 297
 298         if all is None:
 299             self.allcommands.SetValue("")
 300         else:
 301             verbs, commands = all
 302             text = pprint.pformat(map(None, verbs, commands))
 303             self.allcommands.SetValue(text)
 304
 305
 306 #----------------------------------------------------------------------
 307
 308 def runTest(frame, nb, log):
 309     win = MimeTypesDemoPanel(nb, log)
 310     return win
 311
 312 #----------------------------------------------------------------------
 313
 314 overview = """\
 315
 316 The <b>wx.MimeTypesManager</b> class allows the application to retrieve the
 317 information about all known MIME types from a system-specific location and the
 318 filename extensions to the MIME types and vice versa. After initialization the
 319 methods <b>GetFileTypeFromMimeType()</b> and <b>GetFileTypeFromExtension()</b>
 320 may be called: they will return a <b>wx.FileType</b> object which may be further
 321 queried for file description, icon and other attributes.
 322
 323 A global instance of <b>wx.MimeTypesManager</b> is always available as
 324 <b>wx.TheMimeTypesManager</b>. It is recommended to use this instance instead
 325 of creating your own because gathering MIME information may take quite a long
 326 on Unix systems.
 327
 328 This demo shows how to use wx.TheMimeTypesManager to list all known MIME types
 329 and retrieve that information as a wx.FileType from either an extension or
 330 MIME type.
 331
 332 For further information please consult the wxWindows documentation for
 333 <b>wx.MimeTypesManager</b> and <b>wx.FileType</b>.
 334
 335 """
 336
 337 #----------------------------------------------------------------------
 338
 339 if __name__ == '__main__':
 340     import sys,os
 341     import run
 342     run.main(['', os.path.basename(sys.argv[0])])